Gallienus, billon antoninianus. 21,4 mm. 2.5 g. AD 265-266. Rome. Sole reign.

GALLIENVS AVG, radiate head right.
MARTI PACIFERO, Mars walking left, holding olive branch, spear and shield. 
Officina letter H in left field. 

RIC V-1 (Sole reign), Rome 236.

With permission of Eidmar auction 3, lot 556 (on biddr.com), March 2024.